+Free copy that expires IF already owned, can also redeem a free copy of the game as gift certificate which can be gifted to anyone. This gift certificate expires on January 17, 2019 (11:59 PM GMT) UTC+2:00.

[Humble run out of Steam keys for Fractured Lands, but more are on their way (supposedly).]
Was supposed to be -30% or free weekend instead permanently free: https://www.steamgifts.com/go/comment/A784mSR

This giveaway featured "Mr Rabbit's Alphabet Forest Adventure", "Mr Rabbit's Jigsaw Puzzle", "AMPLITUDE: A Visual Novel" and "a Family of Grave Diggers." On 2018 September 16, the keys for a Family of Grave Diggers were revoked.

Collect 6 stamps and receive Murderous Pursuits in the Humble Store Summer Sale Missions - Round 3. The ending time of the deal means that only 4 stamps can be collected for free, getting the last 2 stamps requires spending $10 in the Humble Store.

until September 18, 2018. unlike Steam, DLCs on Origin can be added to account even if don't own the basegame https://www.steamgifts.com/discussion/TfgvG/premium-packages-for-battlefield-1-and-4-are-free-september-11-18

until September 18, 2018. unlike Steam, DLCs on Origin can be added to account even if don't own the basegame https://www.steamgifts.com/discussion/TfgvG/premium-packages-for-battlefield-1-and-4-are-free-september-11-18

Keys available for members that are Level 10+ only. Bug: Master-level users at ARP-tier level <10 glitched out http://alienwarearena.com/ucf/show/1897131/boards/site-bug-reports/ForumPost/fractured-lands-giveaway-error-for-master-level-10

Raiders of the Broken Planet’s Open Beta, all three published campaigns, Alien Myths, Wardog Fury and Hades Betrayal, are available for free on Steam for 48 hours, starting today, May 23rd 7:00 PM CET/10:00 AM PST.

this Launcher App cannot be obtained on its own, this Launcher App simply gets added freely to Steam account when any Sega Classic game (which all are listed as DLC to this app) or package of many such games is activated.

1. Register for free on https://www.brightlocker.com/ 2. Validate your account and follow the tutorial so that you earn some coins 3. Claim your copy of Vampires! OST from https://www.brightlocker.com/games/vampires/rewards by spending 5 coins

1. Register for free on https://www.brightlocker.com/
2. Validate your account and follow the tutorial so that you earn some coins
3. Claim your copy of Vampires! from https://www.brightlocker.com/games/vampires/rewards by spending 10 coins

1. Register for free on https://www.brightlocker.com/
2. Validate your account and follow the tutorial so that you earn some coins
3. Claim your copy of SolarGun from https://www.brightlocker.com/games/solar-gun/rewards by spending 9 coins

This is a strange one. It's a Steam key for "The World of Evo" - an unreleased game.
The redeemed name has a typo and it adds no games to your account.
Maybe one day the game will appear in your library if you activate it? We just don't know.